OOP Calculator

calc_lib.php

<?php
	class Calc{
		public $input;
		public $input2;
		public $output;

		function setInput($int){
			$this->input = (int) $int;
		}
		
		function setInput2($int){
			$this->input2 = (int) $int;
		}
		
		function Calculate(){
			$this->output = $this->input + $this->input2;
		}
		
		function getResult(){
			return $this->output;
		}
	}

	$calc = new Calc();
	
	$calc->setInput(5);
	$calc->setInput2(22);
	$calc->Calculate();
	
	echo $calc->getResult();
?>